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/pascal_triagle_solution.hs

Created March 16, 2013 17:42
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pascal triangle solution
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pascal_triagle_solution.hs
-- generate next row from current row
nextRow row = zipWith (+) ([0] ++ row) (row ++ [0])
-- returns the first n rows
pascal = iterate nextRow [1]
solution n = (pascal !! (2*(n-1))) !! (n-1)
main = do
putStrLn (show (solution 10000))
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